18684448

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{389}}^1$

素因数の和:497

約数の個数: 48

約数和(自身を含む): 39312000

約数和(自身を除く): 20627552

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 79, 152, 158, 304, 316, 389, 608, 632, 778, 1264, 1501, 1556, 2528, 3002, 3112, 6004, 6224, 7391, 12008, 12448, 14782, 24016, 29564, 30731, 48032, 59128, 61462, 118256, 122924, 236512, 245848, 491696, 583889, 983392, 1167778, 2335556, 4671112, 9342224, 18684448]

約数ペア:

[(1, 18684448), (2, 9342224), (4, 4671112), (8, 2335556), (16, 1167778), (19, 983392), (32, 583889), (38, 491696), (76, 245848), (79, 236512), (152, 122924), (158, 118256), (304, 61462), (316, 59128), (389, 48032), (608, 30731), (632, 29564), (778, 24016), (1264, 14782), (1501, 12448), (1556, 12008), (2528, 7391), (3002, 6224), (3112, 6004)]